May 2017 weather data

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(Jan 2018: updated to compare with Usk and not Ross-on-Wye)

May 2017 saw 19 days on which no significant rain fell. The total rainfall of 65.0 mm was 9% below the Usk* average for May of 71.5 mm, much of it falling on six consecutive days (12th to 17th).

Maximum temperatures exceeded 20°C on eight days with a high of 25.7°C on the 16th. May was warm overall as a result, and the average maximum temperature of 18.0°C was 0.5°C above the Usk average for May of 17.5°C.

* Usk is the nearest Met Office station for which long term averages (1981-2010) are available.

Day by day data for May are given below:-

                   MONTHLY CLIMATOLOGICAL SUMMARY for MAY. 2017

NAME: Penallt 210   CITY:    STATE:  
ELEV:   210 m  LAT:  51° 48' 00" N  LONG:   2° 42' 00" W

                   TEMPERATURE (°C), RAIN  (mm), WIND SPEED (km/hr)

                                      HEAT  COOL        AVG
    MEAN                              DEG   DEG         WIND                 DOM
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME    DIR
------------------------------------------------------------------------------------
 1  10.1  15.1   17:30   7.7    6:00   8.3   0.0   1.2   0.6   9.7    3:00   ENE
 2  11.3  16.7   16:00   5.3    7:00   7.0   0.0   0.0   0.6   9.7   16:00   ENE
 3   9.6  14.4   14:30   5.4    6:00   8.7   0.0   0.0   1.8  20.9   11:30   ENE
 4  10.8  16.3   15:30   7.9    3:30   7.5   0.0   0.0   1.9  22.5   17:30   ENE
 5  10.9  15.1   16:30   6.5    5:30   7.4   0.0   0.0   3.2  25.7   13:00   ENE
 6   9.8  13.6   15:00   7.7    4:30   8.5   0.0   0.0   1.3  19.3   10:30   ENE
 7  12.9  19.9   17:00   8.1    6:00   5.6   0.1   0.0   0.3   8.0   12:00     E
 8  10.2  16.0   16:00   5.4    5:30   8.2   0.0   0.0   1.0  14.5   16:30   ENE
 9   9.1  14.6   16:00   5.4   00:00   9.3   0.0   0.0   1.0  12.9   12:30   ENE
10  10.6  17.4   14:30   2.4    6:00   7.7   0.0   0.0   0.8  11.3   16:00   ENE
11  12.7  19.5   15:00   6.4    6:30   5.7   0.1   0.4   1.0  17.7   16:00   ENE
12  12.8  16.2   14:30  10.5   23:30   5.6   0.0   8.6   1.8  20.9   17:30   ESE
13  12.3  17.0   15:00   9.4    5:30   6.1   0.0   3.2   2.4  22.5   20:30   ESE
14  12.9  18.1   14:30   8.3    6:30   5.4   0.0   8.4   1.3  16.1   16:00     W
15  12.6  14.6   15:30   9.4    2:30   5.7   0.0   4.2   3.2  22.5   13:00   ESE
16  14.6  15.3   11:30  13.9   00:00   3.8   0.0   7.0   2.9  25.7    5:00   ESE
17  11.2  13.9    0:30   7.6   00:00   7.1   0.0  15.4   0.2   9.7    1:00   ESE
18  11.3  17.4   13:00   5.1    5:00   7.0   0.0   0.0   0.0   6.4   14:30   ESE
19  10.9  16.2   14:00   7.3    5:00   7.1   0.0   1.0   0.3   9.7   14:00     W
20  10.2  14.3   16:30   5.1    5:00   8.2   0.0   0.2   1.6  16.1   11:00     W
21  12.7  17.7   17:30   7.5    6:00   5.6   0.0   0.0   1.6  17.7   13:00    SE
22  16.3  22.7   15:30  11.3    5:30   3.0   0.9   0.0   1.8  17.7   13:30    SE
23  15.3  21.2   16:30  10.9    2:00   3.3   0.3   0.0   0.8  11.3   15:00     W
24  18.2  26.1   15:00  10.6    5:30   2.1   2.0   0.0   0.2   8.0   13:00   ENE
25  20.1  25.8   16:00  13.6    5:30   1.1   2.9   0.0   1.6  16.1   23:00   ENE
26  19.9  25.8   16:00  12.6    5:00   1.2   2.7   0.0   2.4  20.9   16:30   ENE
27  15.0  18.7    0:30  11.9   23:30   3.3   0.0   7.6   1.8  17.7   11:30     W
28  16.3  22.1   14:00  10.3    6:00   2.8   0.7   0.4   0.3  11.3   14:30   ENE
29  15.3  18.2   18:30  13.1   00:00   3.0   0.0   7.4   0.6   9.7   19:30   ENE
30  14.6  17.7    9:00  12.3    3:30   3.8   0.0   0.0   1.0  12.9    6:00     W
31  15.4  19.5   16:00  11.6    4:30   3.1   0.1   0.0   0.6   9.7   16:30   WNW
-------------------------------------------------------------------------------------
    13.1  26.1    24     2.4    10   172.1   9.9  65.0   1.3  25.7     5     ENE

Max >=  32.0:  0
Max <=   0.0:  0
Min <=   0.0:  0
Min <= -18.0:  0
Max Rain: 15.39 ON 17/05/17
Days of Rain: 13 (> .2 mm) 8 (> 2 mm) 0 (> 20 mm)
Heat Base:  18.3  Cool Base:  18.3  Method: Integration